java class that uses a constructor but also sets instance variables to an instance later on, content taken from the a ruby challenge

Dog.java

public class Dog {
    public static int walks = 0;
    public String location = null;
    
    public Dog(String name, int age) {
        name = name;
        age = age;
    }

    public void bark() {
        String bark = "woof";
        System.out.println(bark);
    }

    public Dog walk() {
        walks ++;
        return this;
    }

    public void setLocation(String location) {
        this.location = location;
    }

    public void display_walks() {
         System.out.println("I have been for " + walks + " walks");
    }

    public void display_walks_and_location() {
        System.out.println("I have been for " + walks + " walks in " + location);
    }

    public static void main(String s[]) {
        Dog tilly = new Dog("tilly", 3);
        tilly.bark();
        tilly.walk().walk().display_walks();
        tilly.setLocation("brighton");
        tilly.display_walks_and_location();
    }
}